نتایج جستجو برای: led lights
تعداد نتایج: 218683 فیلتر نتایج به سال:
Rear-end collision accounts for around 8% of all vehicle crashes in the UK, with failure to notice or react a brake light signal being major contributory cause. Meanwhile traditional incandescent bulbs on vehicles are increasingly replaced by profusion designs featuring LEDs. In this paper, we investigate efficacy design using novel approach recording subject reaction times simulation setting p...
Capturing the dynamics of triple contact line at base a vapor bubble is crucial to development and validation boiling heat transfer crisis models. To this end, laser-based techniques are state-of-the-art. However, they have technical limitations, e.g., due presence parasite interference patterns or laser speckle, often complicated implement operate. In paper, we propose discuss rationale altern...
AIM The purpose of this study was to compare the surface hardness of a hybrid composite resin polymerized with different curing lights. METHODS AND MATERIALS Two 3.0 mm thick composite resin discs were polymerized in a prepared natural tooth mold using: (1) a conventional quartz-tungsten halogen light (QTH- Spectrum 800); (2) a high-intensity halogen light, Elipar Trilight (TL)-standard/expon...
Objective: Shear bond strength is an important property inherent to the durability of tooth-colored restorative materials namely composite resins. It has been years that halogen light sources have been used for polymerization of composite resins. In recent years Light Emitting Diodes (LED) have been introduced for this purpose. With respect to their longer bulb life, needless of a filter and ...
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